Answer :

Final answer:

The length (or height) of a solid with uniform cross-section can be found using the formula V=A*h (where V is volume, A is cross-sectional area, and h is height).

Given a volume of 308 cm³ and cross-sectional area of 38.5 cm², the length of the solid is approximately 8 cm.

Explanation:

The length, or height, of a solid with uniform cross-section can be derived by using the formula V = Ah, where V is volume, A is the area of cross-section, and h is the height.

From the question, we know the volume (V) of the solid is 308 cm³ and the area (A) of the cross-section is 38.5 cm².

We have to solve for h.

To solve this, divide the volume by the cross-section area: h = V/A.

In this case, h = 308cm³/38.5cm² = 8 cm (round to the nearest cm).

So the solid is 8 cm long.

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